XT
ATYR

XTX Topco’s aTyr Pharma ATYR Stock Holding History

XTX Topco’s Portfolio ATYR Stock Details ATYR Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$135K Buy
226,678
+115,255
+103% +$75.3K ﹤0.01% 3428
2026
Q1 		$86.9K Buy
111,423
+32,058
+40% +$27.1K ﹤0.01% 3148
2025
Q4 		$62.2K Sell
79,365
-233,045
-75% -$191K ﹤0.01% 2783
2025
Q3 		$225K Buy
+312,410
New +$1.42M 0.01% 1749
2025
Q2 		– Sell
-19,556
Closed -$59.1K – 3325
2025
Q1 		$59.1K Buy
19,556
+8,374
+75% +$30.5K ﹤0.01% 1970
2024
Q4 		$40.5K Sell
11,182
-6,080
-35% -$18.4K ﹤0.01% 1933
2024
Q3 		$30.4K Buy
+17,262
New +$31.4K ﹤0.01% 1776
2024
Q2 		– Sell
-83,328
Closed -$162K – 2562
2024
Q1 		$162K Buy
83,328
+14,760
+22% +$25.7K 0.02% 1237
2023
Q4 		$96.7K Sell
68,568
-5,326
-7% -$6.83K 0.02% 1130
2023
Q3 		$117K Sell
73,894
-96,531
-57% -$179K 0.02% 1166
2023
Q2 		$368K Buy
+170,425
New +$372K 0.07% 568
2021
Q3 		– Sell
-12,265
Closed -$60K – 1114
2021
Q2 		$60K Buy
+12,265
New +$52.3K 0.02% 716

Other funds holding ATYR

Federated Hermes
Federated Hermes Pittsburgh, Pennsylvania $69.6B AUM 42.52% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
GCP
GSA Capital Partners London, United Kingdom $1.59B AUM 39.81% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
KCM
Kalehua Capital Management Dallas, Texas $174M AUM
Jane Street
Jane Street New York $1.21T AUM 78.12% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

XTX Topco's ATYR Position: Q2 2026 in Review

XTX Topco increased its aTyr Pharma (ATYR) stake by 103% in Q2 2026, buying an estimated $75.3K and bringing the position to 226,678 shares worth $135K. The position accounts for ﹤0.01% of the portfolio, ranked #3428.

XTX Topco first reported a position in ATYR in Q2 2021 and has held it in 12 quarters since. The position peaked at $368K in Q2 2023. 90 funds tracked by Wall St. Rank hold ATYR as of Q2 2026.

  • XTX Topco held 226,678 shares of aTyr Pharma worth $135K as of Q2 2026.
  • XTX Topco bought 115,255 aTyr Pharma shares in Q2 2026, an estimated $75.3K.
  • aTyr Pharma made up ﹤0.01% of XTX Topco's portfolio in Q2 2026, its #3428 holding.
  • XTX Topco first reported a position in aTyr Pharma in Q2 2021 and has held it in 12 quarters since.
  • XTX Topco's aTyr Pharma position peaked at $368K in Q2 2023.
  • 90 funds tracked by Wall St. Rank held aTyr Pharma as of Q2 2026.

Based on XTX Topco's 13F filing for Q2 2026, filed 14 Aug 2026.